Pressurized dyeing machines



A ril'zl, 1970 4 E. STANWAY 3,507,131

. 'rnmssunrzm mmme MACHINES Filed Oct. 27, 1967 3 h t 1 INVENTOP E0 WAR 0 STA AMA Y April 21, 1970 E. STANWAY' 3,507,131] I PRES'SURIZED"DYEINGMACHINESQ FiledOct. 2'7. 1967 3 Sheets-Sheet 2 m/VE/vro'e Eow/m D STAN u/A Y mmw Cianmpar A ril 21, 1970 I "E. s'rAliwAv 3,507,131 I v PREssunxznn DYEING MACHINES 3 Sheets-Sheet 5 Filed Oct. 27, 1967 //VVE/V7'O/P D RD STFWWAY v United States Patent 3,507,131 PRESSURIZED DYEING MACHINES Edward Stanway, 34 Ryles Park Road, Macclesfield, Chester, England Filed Oct. 27, 1967, Ser. No. 678,642 Int. Cl. D06f 17/00 US. Cl. 68-196 6 Claims ABSTRACT OF THE DISCLOSURE A pressurized dyeing machine in which the doors open inwards and are held on their seats during operation by the internal pressure, a pneumatic or hydraulic cylinder being provided to open the doors to give access to the interior when the internal pressure has been reduced to atmospheric.

This invention relates to improvements in pressurized dyeing machines.

Winch dyeing machines have been proposed in which the fabric to be dyed passes in rope form over a winch by which it is pleated in the liquor and drawn therefrom by a front roller.

It has also been proposed to raise the temperature of the dye liquor by pressurizing the interior of the machine, but difiiculty has been experienced in sealing the covers for the aperture or apertures, which open outwardly, through which the fabric is introduced to and withdrawn from the machine, with safety mechanism to prevent the covers from being removed before the pressure inside the machine has been reduced to atmosphere. Various constructions have been proposed for securing the covers in position but none are fully foolproof and all add very considerably to the cost of the machine.

The object of the present invention is to simplify the construction of the machine by pivoting the cover or covers to open inwards whereby the diificulty of sealing of the cover or covers is greatly reduced and the prevention of premature opening facilitated.

According to the invention a pressurized dyeing machine is formed with an aperture or apertures closed by a door or cover or doors or covers pivoted on the inside of the machine to be held closed by the pressure inside the machine, means being provided for pivoting the door or cover or the doors or covers inwardly to give access to the interior of the machine after the internal pressure has been reduced.

The invention will be described with reference to the accompanying drawings showing the invention applied to a winch dyeing machine.

FIG. 1 is a side elevation of one form of machine,

FIG. 2 is an end elevation of same,

FIG. 3 is a detail view of part of the machine casing showing a door in section,

FIG. 4 is an enlarged detail view of part of the door showing the seal therefor,

FIG. 5 is an enlarged detail section showing the seal for the pivot shaft in the end of the machine,

FIG. 6 is a part section through a modified machine having two doors.

A winch dyeing machine A is formed with an aperture or apertures for the introduction to and withdrawal of fabric from the machines, arranged in the upper portion of the casing above the passage of the fabric from the front roller a to a variable winch a The aperture or apertures are closed by a door or cover B or covers pivoted on the inner side of the machine casing on a shaft b to open inwards. Each cover B formed with a periphery to engage a seat b around the aperture, a sealing ring b of rubber or other resilient material being housed between the peripheral edge of the cover 3,507,131 Patented Apr. 21, 1970 and the seating around the aperture and secured to the door by a ring b The shaft b on which the door or cover B is pivoted is provided with an arm B on the outer surface extending outwardly from the machine and connected to the ram d of an hydraulic or pneumatic cylinder D capable of rotating the cover through substantially for the opening and closing thereof. The arm B may be cranked to permit the movement of the door or cover B and the cylinder D is pivoted on a bracket d affixed to the outside of the machine.

The door or covers B and apertures may be eliptical in shape with the major axis lying parallel with the axis of the machine thereby allowing the minor axis to be reduced to facilitate clearance of the fabric during opening of the cover whilst giving adequate space for the entry and withdrawal of the fabric.

In a machine where more than two doors or covers B are employed the shaft b extends through the dished ends of the machine and is mounted at each end to rotate in bush b in a casing b welded to the machine casing and provided with a packing b The shaft b is rotated by cylinders D operating in unison at each end of the machine.

Where only one or two doors or covers B are provided a single cylinder D at one end of the machine is provided as shown in FIG. 6 the opposite end of the shaft b terminating inside the machine.

The machine may be provided with a safety valve a a window a for a mid feather examination, a colour injection pump a*, a colour addition chamber a a liquor run-01f and condenser a a low pressure outlet a a heat exchange inlet a a winch control a inspection windows a, low voltage lighting a steam inlet a, water inlet a condensate outlet r1 variable speed drive a During operation the interior of the machine casing is pressurized above atmosphere and steam, water and coloring material are introduced for performing the dyeing operation. Higher internal pressures increase the seal at the aperture, instead of requiring heavier doors and holding means as needed for the outwardly opening doors of the prior art.

The invention is particularly applicable for high temperature dyeing machines as the pressure in the machine holds the door cover B or the doors or covers on the seat b or seats and the hydraulic or pneumatic cylinder D or cylinders are limited to be capable of only opening the door or cover or the doors or covers when the internal pressure is substantially atmospheric thereby preventing premature opening thereof.

A machine as hereinbefore described may be manufactured at a substantially less cost than existing pressurized machines with outwardly opening doors or covers and the safety factor is greatly increased.

What I claim is:

1. In a pressurized dyeing machine, means defining a pressure tight casing chamber adapted to receive textile material to be dyed, means for treating said material within the chamber with dye liquor under relative high temperature and above atmospheric internal pressure conditions, means defining an aperture in a wall of said casing for introduction and withdrawal of said textile material, a door for closing said aperture mounted upon a pivot within said casing for swinging between a closed position over said aperture and an open position within said casing, sealing means providing a continuous peripheral seal around said aperture when the door is in closed position, and means for positively moving said door between said positions, said door being urged into increased sealing engagement with the casing wall at said aperture by said internal chamber pressure during the pressure dyeing operation, said door moving means being a power operated device of such capacity that it is capable of moving the door inwardly to open position only after the internal pressure of said chamber has reduced to substantially atmospheric pressure.

2. In a pressure dyeing machine as defined in claim 1, said pivot for the door comprising a shaft onwhich the door is mounted having at least one end projecting through the casing, and said door moving means comprising a fluid pressure operated motor operatively connected to said shaft.

3. In the pressure dyeing machine defined in claim 2, 10

a pressure tight journal on said casing Where the shaft passes through the casing.

4. In the pressure dyeing machine defined in claim 2, said fluid pressure motor comprising a cylinder pivoted outside said casing, a ram projecting from said cylinder, and motion transmitting lever mechanism interconnecting said ram and shaft outside the casing.

5. In the pressure dyeing machine defined in claim 2, there being a plurality of apertures along said casing, a

pivot shaft rotata'bly mounted at opposite ends on the 20 casing and carrying a door for each aperture, and said power means being connected to said shaft.

6. In the pressurized dyeing machine defined'in claim 1, said sealing means comprising a continuous resilient member secured on the door and adapted to engage an internal seat on said casing around said aperture when the door is in closed position.

References Cited UNITED STATES PATENTS 857,148 6/1907 Barr 220-553 2,363,802 11/1944 Quarfoot et a1. 220-553 XR 2,374,247 4/1945 ThaXton 68-209 XR 2,536,431 1/ 1951 Endsley 220-55 .3 XR 2,917,200 12/1959 Phelan et a1. 220-553 3,177,592 4/ 1965 Meyer 68-210 XR 1,015,847 1/1912 Shields 21-98 ROBERT L. BLEUTGE, Primary Examiner US. Cl. X.R. 

